Question 1028377
15x+20y=330 

/5

3x+4y=66

14x+21y=336
/7
2x+3y=48

3	x	+	4	y	=	66	.............1		
									
2	x	+	3	y	=	48	.............2		
Eliminate	y								
multiply (1)by		-3							
Multiply (2) by		4							
-9	x		-12	y	=	-198			
8	x	+	12	y	=	192			
Add the two equations									
-1	x				=	-6			
/	-1								
x	=	6							
plug value of			x	in (1)					
3	x	+	4	y	=	66			
18		+	4	y	=	66			
			4	y	=	66		-18.00	
			4	y	=	48			
				y	=	12			
x=	6							
y=	12							
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